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Congenital disseminated neurofibromatosis type 1: a clinical and molecular case report

Stewart, H., Bowker, C., Edees, S., Smalley, S., Crocker, M., Mechan, D., Forrester, Natalie, Spurlock, Gillian and Upadhyaya, Meena 2008. Congenital disseminated neurofibromatosis type 1: a clinical and molecular case report. American Journal of Medical Genetics Part A 146A (11) , pp. 1444-1452. 10.1002/ajmg.a.32305

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Neurofibromatosis type 1 (NF1) is an autosomal dominant condition with a birth incidence of 1/3,500. Around 50% of cases are due to new mutations. The NF1 gene maps to 17q11.2 and encodes neurofibromin. NF1 is a “classical” tumor suppressor gene. Congenital disseminated NF1 is rare with just two cases previously reported. We present a deceased baby with congenital disseminated NF1 in whom we performed molecular studies. A germline mutation (R461X) in exon 10a of the NF1 gene was found. A 2 bp deletion (3508delCA) in codon 1170 of exon 21 was identified in DNA derived from some tumor tissue. Loss of heterozygosity in NF1 and TP53 was observed in other tumor samples. No microsatellite instability was observed in the tumor samples. This is the first report of molecular analysis of the NF1 locus in a patient with disseminated congenital neurofibromatosis. This case had a de novo germline mutation in NF1 and three documented somatic mutations in the NF1 and TP53 genes in tumor specimens.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Biosciences
Subjects: R Medicine > R Medicine (General)
Uncontrolled Keywords: neurofibromatosis type 1, NF1 gene, congenital, disseminated
Publisher: Wiley and Blackwell
ISSN: 1552-4825
Last Modified: 04 Jun 2017 03:29

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